scroll on all tabs, initial geometry examples, add showcase tab, move all tab to last position
Merge branch 'master' into geoTutorial
Merge branch 'master' into geoTutorial
finished sandcastle examples
polyline examples
scale bounding sphere
correct bounding sphere scale.
cleanup
add translucent shapes, rename everything
changes
cleanup
Decoupled canvas client dimensions from drawing buffer dimensions.
addressing minor issues with pull request
Fix #1160, and clear the canvas correctly.

The canvas used to be cleared by "resize" which would write
to the size even if it was unchanged.  Now that this is no
longer the case, it must be cleared manually.
Fixing issue where pick rays were miscomputed when the browser was zoomed
Fix issue #1166.
adding support for window.devicePixelRatio

Firefox 23 updates window.devicePixelRatio when zooming; Chrome 29 does
not. Chrome 31 does, but that's not stable yet.
Fix GeometryInstanceAttribute memory pressure

Make `Color.toBytes`, `ColorGeometryInstanceAttribute.toValue`, and `ShowGeometryInstanceAttribute.toValue` take an optional result parameter.  This avoids very costly TypedArray allocations each frame.
Merge branch 'master' into geoTutorial

Conflicts:
	Apps/Sandcastle/CesiumSandcastle.js
	CHANGES.md
Merge remote-tracking branch 'agi/master' into browser_zoom_fix

Conflicts:
	CHANGES.md
	Source/Scene/Camera.js
	Specs/Scene/CameraControllerSpec.js